Capped column



@ab 26 i926. 1,604,93

F. R. PETERSON CAPPED COLUMN 4 Filed (1ct` 2:5, 1919 retenant a. as, 192e.

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FREDRICK REYNOLD PETERSON, 0F MALDEN, MA'SACHUSETTS, ASSIGNOR TO SAMUEL FINE, OF EAST BOSTON, MASSACHUSETTS.,

CAPPED COLUMN.

Application 'mea october 23, 191e. serial No. 332,723.

The present invention lrelates to' supporting columns and more particularly to capped columns for supporting building structures and .the like.

A -common type of column of the abovedescribed character comprises a casing the interior of which is filled with hardened concrete and which is surmounted by an enlarged cap. Upon the cap rests the supported structure, the weight of which is borne by the column. Two main types of cap are commonly employed, one of cast iron or steel, which is cast as a unit, and the other of which is a built-up capconstituted of separate steel or wrought iron parts and comprising a crown plate and supporting brackets ltherefor" extending through the walls of the casing and anchored or embedded Vwithin the concrete contained therein. Neither of these types is entirely satisfactory, the cast-iron cap lacking the requisite stress-resisting properties and the supporting capacity of the steel or wrou ht iron brackets beingv necessarily limited by the degree of hardness of' the concrete. The built-up cap, furthermore, is very expensive to build. y

An objectof the present invention is to provide an improved capped column of the above-described character.

Another object is to simplify the construction of caps and columns, increasing their strength, durability and eliciency and reducing their cost of manufacture.

To the attainment of these ends, a feature of the invention resides in integrally securing to the casing brackets having great stress-resisting characteristics, whereby the stress may be borne not b the concrete, as is the case with presentay built-up caps but by the casing itself. The process o manufacture is thus greatly. simplified and cheapened and the resulting cap is adapted to withstand greater stresses.

With the above andother objects in view,- as will be apparent to persons skilledin the art, the invention consists of the` improved capped column hereinafter described, illustrated in the accompanying drawings and defined in the appended claims.

In the accompanying drawings, Fig. 1 is a side elevation of a capped column constructed according to a preferred embodiment of the present invention; Fig. 2 is an underside plan View of the crown plate and its supporting brackets, with the casing shown in section along the line 2-2 of Fig. l; Fig. 3 is a sectional view taken upon the line 3-3 of Fig. 2 looking in the direction of the arrows; Fig. l is a sectional view, taken upon the line 4-4 of Fig. l, looking in the direction of the arrows; and Figs. 5, 6', 7 and 8 are views of details.

In the preferred form of the invention which is illustrated in the drawings, the capped column is shown as'comprisng an outer steel or wrought iron. casing 2 surmounted by a cap l and adapted to receive within its walls a tire-proof lilling (S, like concrete. The casingQ is preferably cylindrical, but it may be of any desired. shape, as rectangular, corrugated, fluted, etc.

"T he cap 4 comprises a plate 7 and a plurality of plate steel or wrought-iron reinforcin or supporting brackets therefor integral y secured to the casing 2. In the present instance, the brackets are integrally secured to the casing by welding. The brackets are shown simple in shape, unprovided with hooks or tenons of any kind whatsoever. For the sake of concreteness, theterm steel bracket will be hereinafter employed to denote generically a bracket made either of steel or wrought iron. The

plate 7 is shown as a crown plate, but it will be obvious that the invention is equally applicable to base plates.l The term. crown plate will accordingly be hereinafter cmployed for definiteness, but it will be. understood to denote either a crownplate, properly so called, or a base plate. To facilitate the welding process, a plurality of slots 8 extend preferably longitudinally from one endof the casing. The walls of the slots taper, as illustrated more particularly at l0, Figs.' 6 and 7 Tlie space between the walls of the slots and the bracket and beyond is.

adapted to be filled with welding material 12 1n a molten state and. the parts welded together under a flame according to a wellf known process, providing for a rigid union 'of the parts. The welding material 12 b providing additional metal at the joint, at

ords added rigidity and strength.

c ing, if desired. 1 s shown, however, the inner sides of the brackets 14 are flushv with the interior Wall of the easing. lVhere diametrically opposed brackets are employed,

the single plate bracket 16 may be employed, extending `into and through two diametrically opposed slots 8. The ends of the plate bracket thereby aid in supporting each other. The intermediate portion 18 of the bracket 16 may be employed to secure the bracket to the crown plate 7. Any suitable securing means may be employed, such as angle irons 20 riveted to the bracket and to the crown plate. The brackets 14 may also be secured to the crown plate by angle irons and rivets, particularly it portions ot the brackets )roject into the interior of thel casing. s the provision of angle irons outside of the casingT 2 wouldemar the appearance of the column, the brackets 14 may preferably be secured to the crown plate in the manner illustrated. For this purpose, a projection 22 is formed upon the bracket 11 adapted to enter an opening 21 in the crown plate, the walls of the opening tapering toward the bracket, as shown. The projection 22 is of greater dimension than the thickness of the crown plate, so as to provide 'for swaging the projection into the opening 21, as shown at 26, the parts becomin i' thus el"- fectively secured together. Thougi a single projection 22 is shown as provided upon each bracket 14, it willbe understood that as many projections may be .employed as are deemed necessary. It' preferred, the bracket 16 may be secured to the crown plate in the same manner.

The crown plate may be secured to the brackets either before or after the brackets are welded to the casing'. If angle irons like those indicated by the numeral 2O are employed, the crown plate is preferably secured to the brackets before the brackets are secured to thecasing'. As the interior of the casing is not then usually accessible to the Welding,l flame, lthe slots 8 should then be shaped as shown at Fig. 7. W'hen both the exterior and the interior may be ex posed to the flame, the walls of the slot 8 may be shaped as shown in Fig. G. In the former event, the welding material and the welding flame will be applied to the cxterior of the easing only; in the latter event, they will be applied to both the exterior and the interior. It desired, the crown plate 7 may also be welded to the casing, and'to facilitate such welding, the end of the casing may be bevelled as shownl at Q8, Fig. 5, so that the molten welding material may be applied under the welding lflame in the space between the casing and the crown plate.

In order that floor beams, girders, rafters and the like may be supported by the column at different elevations, additional crown plates 30 may be provided upon the sides of the column at any spaced from the crown plate 7. The crown plates 30 may be supported by re-entorcing brackets 32 secured to the casin described, and may extend within transverse slots 34 ot the casing to the walls of which the crown plates 30 may be welded if desired as indicated in Fig. i

After the metal parts of the column have been complet-ed. the column muy be turned end for end aud a. filling of plastic material, like concrete in plastic form, poured thereinto and allowed to harden, rendering the column strong, durable and lireproot.

It will be noted that the. cap is secured directly to, and is supported entirely by, the casing, and docs not require to be anchored to. or imbedded in the concrete. as is customary with built-up columns andcaps of the present day. The parts are rigidly secured at the joints so that no additional securingr means ot any sort, such as reinforcing rods are required other than those which secure the crown plate to the brackets.

-The improved cap of the present invention is much stronger, more durable and more cilicient than any which have been heretofore proposed, is lireproot, resisting the effects of lire without warping,r or cracking, and may be manufactured at small cost.`

It will be understood that the invention is not limited to the exact en'ibodiment thereof which is herein illustrated and described, but that changes may be made therein by the skilled artisan without departing from its spirit and scope as defined by the appended claims.

I claim: f

1. A built-up column comprising a concretefilled casing having a longitudinally disposed slot, and a built-up steel cap comprising a steel crown plate and a steel' plate bracket supporting the crown plate, the plate bracket being disposed in the slot with the plane ol' the )late bracket disposed `longitudinally of tlie casing, and the plate bracket being rigidly secured directly to the casing independently of the concrete by Welding.

2. A built-up column havin a slot and a bracket within the slot Welde to the Walls thereof.

3. A, built-up column havingr a slot, a bracket; within the slot welded to the walls desired positions e' as above lili) IBI) thereof, and a crown plate supported by the bracket 4'. A built-up concrete-filled column coniprising a casing having a slot extendingr longitudinally from one end thereof, a plate bracket extending,r into the s'ot welded to the walls thereof, and a crown plate secured 'to the bracket. i

5. A built-up column comprising a casingT having `a longitudinally extending slot the walls of which taper, a bracket extending into t-he slotA welded tothe walls thereof with welding material which fills the space between the walls of the slot and the bracket and beyond,`and a crown plate supported by the bracket.

6. A built-up column comprising a casing having a slot, a bracket within the slot welded to the walls thereof and a crown plate supported by the bracket and welded to the easing.k

7. A built-up columnhavingaslot extending longitudinally from an end thereof, a bracket within y the slot welded to the wals.

' thereof having a projection. and a crown piatesupportcd upon said end and` having an opening to 1ece1ve said projection, the

walls of the opening tapering towards the bracket and theprojection beingswaged into the opening.

' 8. A built-up column having-a plurality of slots extending from an end thereof, a bracket in each of said slots welded to the walls thereof, and a crown plate supported upon said end and said brackets.

9'; A built-up, concrete-filled column comprising a casing having a plurality of slots extending longitudinally from an end thereof, a bracket within each of the slots weldedto the walls thereof, and a crown plate resting upon said end secured to the brackets.

10. A built-up column comprising'a casing havingv a longitudinall)T extending slot, and

a plate bracket within the slot welded to the walls thereof, the inner slide of said bracket being Hush with the interior wall of the casing.

11. A built-up column having two dialnetricallyl opposed-slots, a bracket extending into the column through said slots and welded to the wall of said slots, and a crown plate supported by said bracket.

` 12. A built-up column having three slots extending longitudinally from an end thereof, a bracket extendingthrough two of said slots and welded to the walls thereof, a bracket wit-hin the third slot and welded to its walls, and a crown plate supported by vsaid brackets.

13. A built-up column having a longitudinally extending slot spaced fromvan end thereof, a plate bracket within the slot welded to the walls thereof having an upwardly extending projection, and a crown plate supported by the bracket having an ns i 15. A built-up column having two diainc trically opposed slots, a simple, plate bracket extending into the column through said slots and secured to the walls of said slots4 by welding only, and a crown plate secured to said bracket.

1G. The method of making a built-up column which comprises slotting a casing. inserting a plate into the slot, and integrally uniting the lplate to the walls of the slot by welding. A 17. The method of making a built-up column which com prises longitudinally slotting a casing so Vas to make the walls of the slot tapering, inserting a plate bracket into the slot, integrallyunting` the bracket to the walls of the slot by welding with welding material which fills the space between the walls of the `slot and the bracket and beyoud, providing a projection upon the bracket, .providing a corresponding openingin a crown plate, mounting the crown plate upon the bracket with the projection in the opening, swaging the projection into the opening, and welding the crown plate to the casing.

-18. The method of making a built-up column which comprises slotting a casin inserting a plate bracket into the slot,we1 ing the plate to the walls of the slot` and securing a crown plate to the bracket.

"19. The method of making a built-up column which comprises longitudinally slotoisting a casing at an end thereof. inserting a plate bracket into the slot, welding the bracket to the walls of the slot, mounting a crown plate upon said end so as to be supported by the bracket,v and welding the' crown plate to the casing.

20. The method of making a built-up col- 'i umn which comprises longitudinally Slotting a casing at an end thereof, forming a projection upon a plate bracket, inserting the bracket into the slot, welding the bracket to the walls of the slot` forming a tapering opening in a crown plate, mounting the crown plate upon said end of the casing so as to be supported by the bracket with the projection in the opening and the smaller end of the opening adajcentxto the bracket. and swaging the projection. into the opening.

l 21. The method of making a built-up column which comprises longitudinally slotting a casing at a plurality of points at an 'end of the casing, inserting a plate bracket in each oi' the slots, welding the brackets to the Walls of the corresponding slots, and securing a crown plate to the brackets.

22. The method of making a builtup column Wbiclr comprises longitudinally slotting a casing at two diametrically opposite points at an end of the casing, insertingr a plate bracket into the column through the slots, Welding the bracket to the Walls of the slots, and securing a crown plate to the bracket.

23. The method of making; a built-up column which comprises longitudinally slotting an end of a casing atv three points, inserting a plate bracket into the column through two of the slots, and another plate bracket in the third slot, welding the brackets to the Walls of the corresponding slots, and securing a crown plate to the brackets.

24. A building column comprising a casing provided with a slot, a bracket in the slot the slot edges and bracket being welded together, and a top plate reetingr on the bracket and secured to the column.

25. A buildinglr column comprisingr a casing, a bracket thereon. a .lug on said bracket and an apertured top plate the aperture of which engages the bracketing.

26. A buildinga column comprising: a slotted casing, the slots being opposed, a bracket in said slots. lugs on the bracket and a' top plate provided with apertures cngug ing the bracket lugs, the bracket and slot edges beingf welded together.

27. A buildingr column comprising a ons ing provided with slots, a bracket in eachv said casing, the edges of the slot being weld- 1 cd to the side faces of the bracket` a top plate resting,r on the casing and bracket and secured thereto and a plastic filling Within said casing.

29. A buildingT column comprisingr acasing provided with opposed slots, a brackety in said slots extending' outside of and through said casing, the edges of the slots and eide. faces ot the brackets being;` welded together, and a top plate resting on the brackets and secured to the column.

plate, the

30. A building column comprising a cas ingrl provided with a slot. a lnacket in said slot, a top plate resting: on the bracket and casino' ond. the top plat-e and casini: end bcing welded together whereby spreading of thc slot is prevented.

ln testlrnom7 whereof` I have hereunto Subscribed my name this 18th day of Oc# tober7 1919.

FREDERICK REYNLD PETERSON. 

